Window sash tensioning device



J ist J. E. HAYNEs 2,731,287

WINDOW SASH TENSIONING DEVICE Filed March 29, 1952 Jan. 17, 1956 I8 gez? Pm 4 vlllallllllllll. vlllllllll'dlllll r l '1111 4 i @WwW/JM.

ATTORNEY.

NUnited States Parent O This invention relates to building construction and more particularly to window structures of the vertical reciprocating type where the sashes are replaceable, at the option of the user.

' `It has among its objects the provision of a removable tofore anticipated in the prior art. p

Another object of the invention is to provide a new and improved auxiliary window sash that will be removable and replaceable easily and elfectively in a window frame without the need of special tools.

Another object of the invention is to provide a new and improved retractable tensioning means for adjustably taking the side play out of a window sash after it has been inserted in a window frame and for frictionally holding the sash in predetermined positions in said window frame.

Another object of the invention is to provide a removable sash tightening device for attachment to a window sash.

Other objects of the invention will become apparent as the invention is more fully set forth.

For a better understanding of the invention, and its principles and operation, reference is made to the accompanying drawings, which disclose a particular form of the invention by way of example and not of limita- These drawings are explained in the following description while the claims indicate the scope of the invention.

Referring to the drawings:

Figure l is an inside elevation of a window frame having an auxiliary sash unit with removable sash tightening devices embodying this invention, with parts of the frame broken away to show the sash with its upper device depressed and the lower device expanded;

Figure 2 is a sectional view taken along line 2-2 of Figure l;

Figure 3 is a sectional view of a modilication taken through a sash channel showing the tightening device in expanded condition;

Figure 4 is an end view of a sash channel the bearing spring mounted thereon;

Figure 5 is a sectional view taken along line 5-5 of Figure 4; and

Figure 6 is a sectional view similar to that shown in Fig. 5, except that the bearing spring is shown depressed in full lines and expanded in broken lines and mounted in an H formed sash construction, instead ofthe channel construction shown in Figure 5.

Similar reference numerals refer to similar parts throughout the drawings.

ln the construction shown in the drawings, a storm window frame 10 of conventional channel form is commonly employed to hold removable sashes. It consists of a back 11 with four flanges 12 extending out at right angles from the back. These flanges provide three U- formed recesses 13, 14 and 15 longitudinally along the showin g wise within their frameworks, and not simply for storm purposes in the usual limited sense.

The frame l0 is shown as having mounted therein a full length sash, i. e. a sash large enough to close the opening in the frame. The sash framework 20 has `a glass panel 22 mounted in it, The construction of the sash is preferably of H construction having a central web 23.

This web 23 separates the channels 24 and 25 on both sides thereof. The channel 24 is to receive the pane of 32 in sash framework 20.

The vertical sides 21 of the framework 2t) are used are removably attached to one side of the vertical sides 2i and spaced at suitable locations to enable them to hold the sash in the window frame lil. When the tensioning mechanisms 26 are depressed against the adjacent vertical side 21, sald side may be slipped into one of the recesses After the sash. is inserted in In the modied form shown in Figure 3 the sash frame is formed of a channel 36 with its web 37 slotted at 38 the inner flange 41 of a latching device 46 when the bearing spring le is depressed. The outer flange 42 of the latching device is cut and the web 45 of the latching device has a portion projecting beyond the ilange 42 to form a key 43 to enter the slot 38 in the web 37 of the channel 36 to prevent the latching device from lateral movement when the bearing spring 18 is depressed. The web 45 is provided at each end with cut-outs 46 so the edges may be bent outward at 47 to form spring tensioning means to frictionally fasten the latching device 49 between the walls 4S of the channel frame to prevent its falling out of the channel when it is in use. The web 37 is preferably provided with a round hole 49 and an elongated hole 50 for each bearing spring used with the sash.

To remove a sash equipped with this tensioning device from a window frame 10, the sash is pushed against one of the side corners of the window frame 10 to preferably compress one bearing spring at a time, then depress the next spring, etc. The amount of pressure required to compress the spring individually will be less than the total pressure required to compress all the springs at the saine time. ln the H construction used in the sash, the bearing spring 18 is depressed and moves the locking arm 17 through the slot 16 in the web 23 until the under-cut 27 engages the edge 19 of the web 23 through the action of spring 33. In the channel constructed frame 36 the bearing spring 18, locking arm 17, undercut 27, and spring are the same construction and operation as used in the H construction frame. The under-cut 27 engages in the slot 39 in the latch plate 40 and holds the spring 18 depressed until released by locking arm 17.

While but two forms of sash have been shown attached Vto the invention disclosed herein, it is not intended to limit the construction of the device to these particular forms, as it is appreciated that other structures could be made that employ the same principles and come within the scope of the appended claims.

Having thus described the invention, what is claimed is:

1. A device for holding a sash in a window frame: said device comprising an larcuate spring; a pin connected to the central portion of the concave side of said spring; a plate secured to said pin; a locking arm pivoted to said pin and having a recess intermediate the ends thereof; a spring having an intermediate portion coiled around said pin, with one end engaging said plate and the other end secured to said locking arm to urge it to a position in which an central portion adjacent to said Y edge of said recess engages an abutment, when said arcuate spring is depressed, to hold said spring in such conl dition.

2. A device of the type set forth in claim l adapted to be mounted in a channel in a side of a sash and inc1uding means for retaining said device in said channel after the device is positioned therein.

3. A device of the type set forth in claim 2, in which said retaining means includes pins projecting from the opposite ends of the concaveside of said arcuate spring for engagement with elements extending across the channel in such sash.

4. A device of the type Vset forth in claim 2 including a latching device comprising a hollow `member having a web and a pair of anges projecting in parallelism from the opposite edges of said web, both of said anges having alined openings therein for the passage therethrough of said locking arm.

References Cited -in the le of this patent UNITED STATES PATENTS 

